diff --git a/fix_werkzeug.patch b/fix_werkzeug.patch
deleted file mode 100644
index 0632b27..0000000
--- a/fix_werkzeug.patch
+++ /dev/null
@@ -1,38 +0,0 @@
-diff -U 3 -dHrN -- a/trytond/wsgi.py b/trytond/wsgi.py
---- a/trytond/wsgi.py	2021-02-12 10:14:41.000000000 +0100
-+++ b/trytond/wsgi.py	2021-02-15 12:37:50.432511576 +0100
-@@ -10,13 +10,23 @@
- from werkzeug.wrappers import Response
- from werkzeug.routing import Map, Rule
- from werkzeug.exceptions import abort, HTTPException, InternalServerError
--from werkzeug.contrib.fixers import ProxyFix
-+try:
-+    from werkzeug.middleware.proxy_fix import ProxyFix
-+
-+    def NumProxyFix(app, num_proxies):
-+        return ProxyFix(app,
-+            x_for=num_proxies, x_proto=num_proxies, x_host=num_proxies,
-+            x_port=num_proxies, x_prefix=num_proxies)
-+except ImportError:
-+    from werkzeug.contrib.fixers import ProxyFix as NumProxyFix
- try:
-     from werkzeug.security import safe_join
- except ImportError:
-     safe_join = posixpath.join
--
--from werkzeug.wsgi import SharedDataMiddleware
-+try:
-+    from werkzeug.middleware.shared_data import SharedDataMiddleware
-+except ImportError:
-+    from werkzeug.wsgi import SharedDataMiddleware
- 
- import wrapt
- 
-@@ -157,6 +167,6 @@
-     app.wsgi_app = SharedDataMiddlewareIndex(app.wsgi_app, static_files)
- num_proxies = config.getint('web', 'num_proxies')
- if num_proxies:
--    app.wsgi_app = ProxyFix(app.wsgi_app, num_proxies=num_proxies)
-+    app.wsgi_app = NumProxyFix(app.wsgi_app, num_proxies)
- import trytond.protocols.dispatcher
- import trytond.bus